Tytuł pozycji:
Microstructure Evolution Through Cryogenic Rolling of Ultra-High Purity Titanium Produced by Electron Beam Melting
In this study, crystal grain refinement of pure titanium manufactured by electron beam melting through cryogenic rolling was performed. The effect of rolling in a cryogenic atmosphere on average grain size was investigated. Cryogenic atmosphere rolling was confirmed to be smaller than normal temperature rolling. Electron back scatter diffraction (EBSD) confirmed the presence of oriented crystal grains in the material. The deformation, temperature, and stress generated during rolling were calculated using 3D simulation. Finite element analysis (FEM) modeling was used to analyze the trend of average grain size change during the heat treatment of the rolled samples.
This work was supported by the Technology Innovation Program (grant number 20010047, “Development of deoxidation refining process using off grade Ti scrap over 100 kg per day for the production of 4N5 grade ingot and utilizing powder technology”) funded by the Ministry of Trade, Industry & Energy, Korea). This study was supported by the Fundamental Research Program of the Korea Institute of Material Science (Grant number PNK8180).